CVE-2021-47752CWE-770

AWebServer GhostBuilding 18 - Denial of Service (DoS)

High · published January 15, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

⚡ AWebServer GhostBuilding 18 has a sneaky denial of service vulnerability, just waiting for someone to send a flood of requests and crash the whole server! 🚨 Think of it like a restaurant where every customer decides to order at the same time, overwhelming the kitchen and causing delays—no food is served, and diners are left frustrated. This vulnerability lets attackers do just that, sending a barrage of requests to clog the server's workflow. If attackers exploit this vulnerability, they can bombard the server with multiple requests, effectively rendering it unresponsive. This could lead to significant downtime, loss of service, and upset users—all while the attackers sit back and enjoy the chaos.

Put simply

Think of it like a restaurant where every customer decides to order at the same time, overwhelming the kitchen and causing delays—no food is served, and diners are left frustrated. This vulnerability lets attackers do just that, sending a barrage of requests to clog the server's workflow. This denial of service vulnerability allows remote attackers to overwhelm the server by sending numerous concurrent HTTP requests to various endpoints, including potentially critical areas like /mysqladmin.

What to do

If attackers exploit this vulnerability, they can bombard the server with multiple requests, effectively rendering it unresponsive. This could lead to significant downtime, loss of service, and upset users—all while the attackers sit back and enjoy the chaos. To protect against this, patch your AWebServer to the latest available version immediately. Implement rate limiting and monitoring on your server to detect unusual traffic spikes. Make sure to configure your server to handle concurrent requests more efficiently. You've got this! With the right steps, you can keep your server running smoothly and protect it from potential disruptions. 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00584 · 47.2th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-01-15T15:52Z
EPSS history
Timeline
  • 15 JAN 15:52Z
    AWebServer GhostBuilding 18 - Denial of Service (DoS)
    cvelistv5